Brookfield and Danbury schools will dismiss early Thursday because of the ongoing heat and problems with Brookfield schools’ ventilation systems.

All Danbury schools will be on a weather-related early dismissal Thursday. All after-school activities and the Extended Learning Program also are canceled.

Brookfield High School will close at 10:30 a.m. The open house will be canceled and no lunch will be served.

Whisconier Middle School will dismiss at 11 a.m. and no lunch will be offered.

Center and Huckleberry Hill elementary schools will close at 11:35 a.m. Lunch will be served.

Several air handling systems in the buildings have broken down, the district said in a post on its Facebook page. Meanwhile, the National Weather Service is predicting temperatures could reach 88 degrees. A heat advisory is in effect from 11 a.m. to 7 p.m. Thursday.

Danbury, New Milford and Ridgefield dismissed early Tuesday because of the weather. Other area schools have not announced early closures for Thursday.